Multiple-wire-drawing machine



Sept. 10, 1929.

W. NACKEN MULTIPLE WIRE DRAWING MACHINE Filed July 6, 1928 5 Sheets-Sheet l w m v Naoken lNVENTO R; 4

Mluruel Sept. 10,, 1929. w. NAcKEN IULI'IPLE WIRE DRAWING norm":

5 Sheets-Sheet 2 Filed July 6, 1928 Walther Nack en |N V E N'T'OR: WW

- Attorney.

Sept. 10, 1929. w. NACKEN ,7

MULTIPLE WIRE DRAWING momma Filed July 1928 5 Sheets-Sheet 3 INVENTOR:

p 19294 w. NA REN 1,727,664

I ULTIPLE WIRE DRAWING MACHINE Filed July 6, 1928 5 Shents -Shaoi; 5

w h ,v Nmcken INVENTOR:

By 4;. Attorney.

Patented Sept. 10, 1 929.

UNITED STATES WALTHER NACKEN, OF GRUNA, NEAR CHEMNITZ, GERMANY.

MULTIPLE-WIRE-D'RAWING MACHINE.

Application filed July 6, 1928, Serial No My invention relates to multiple wire drawing machines consisting of a plurality of consecutive individual drums and in which the wire is drawn'ofi through an eye or roller located above the center of the drum and passed on to the next drum.

In these machines, slipping of the wire on the various drums is avoided by providing on each drum a certain amount of wire and by the fact that each drum while pulling the wire required by it from the preceding drum. pays out substantially the same amount of wire to the following drum. Any difference between the taken up and paid out wire of each drum is balanced by an increase or a reduction of the store of wire upon the drum.

My invention consists of an improved multiple wire drawing machine of this kind.

The accompanying drawings illustrate some embodiments of my invention, by way of example. i

In the drawings illustrates Fig. 1, a front elevation of the general arrangement, the inclined drums being shown vertically for the sake of simplicity,

Fig. 2, a side elevation of the machine with the drum in the correct inclined position,

Fig. 3, a front elevation of a modified construction of my machine, in which the starting and stopping of the drawing drum is effected mechanically by the strength of the operator,

Fig. 4, a cross-section along line AB of Fig. 3,

Fig. 5, a similar cross-section to Fig. 4, but with the operating parts in different positions,

Fig. 6, a detail of Fig. 3 in plan,

Fig.7, a front elevation of another modified 4 construction of my machine,

Fig. 8, a cross-section along line C D of Fig. 7,

Fig. 9, a longitudinal section through the starting and stopping gear of the machine according to Fig. 7, with the drawing drums in elevation,

Fig. 10, a plan of the stopping gear,

Fig. 11, a plan of the stopping and starting levers, and

Fig. 12, some details in sectional elevation.

. 290,764, and in Germany August 6, 1927..

Like parts are indicated by like letters of reference throughout the figures of the drawings.

The process of drawing the wire and the mode of operation of'my improved machine will be described first with reference toFigs. 1 and 2 of the drawings.

In the drawings is illustrated a machine with 4 draw dies, but it will be understood that the machine might have any suitable greater number of these elements. 5, 6 and 7 are the preliminary drawing drums, while 8 is the drum for winding up the finished wire..-: The wire passes through thefirst draw die 1 l on to the drum 5, is coiled around this drum in a suitable number of turns, drawn off at the point of the drum, passed around a roller 9 at the top and then downwards to a roller '90 and to thenext draw plate 2, the roller 90 being preferably submerged in a drawing solution contained in a trough 12 arranged at the front of the machine. This process is repeated at the drums 6 and 7 and die 3, whereupon the finished wire after having passed through the eye 4 is wound upon the drum 8.

At the front of the machine, there is arranged at each drum a treadle or handle 14, 15, 16, 17. These levers act in a suitable manner, which will be described in detail later on, upon a clutch provided at each drum, which is generally indicated at 18 in Fig. 2. The tre'adles are also connected with one another in a definite manner. WVhile by the operation of the treadle 14 merely the drum 5 is thrown into or out of gear, the treadle 15 is coupled with the lever 14 in such a manner that it throws out and in not only the drum 6 but simiultaneously the drum 5. The treadle 15 has, on the other hand, no effect upon the drums 7 and 8. The treadle 16 does not only throw the drum 7 into and out of gear, but simultaneously also the drums 6 drum 6 but simultaneously the drum 5. The treadle 17, on the other hand, throws not only the drum 8, but also all the drawing drums on the left of it simultaneously out of or into gear.

Thismechanism operates in the following manner: Ifv a wire is to be drawn on themachine, it is by hand or by means of a suit- 100 able mechanical device threaded through the first die 1, so that it projects by about 20 to 30 inches. his die is then inserted into the holder of the machine, the drum 5 stopped by, for instance, depressing the right-hand side footrest of the treadle l4, and the loose end of the wire slung around the drum and attached at the upper end of the drum in some suitable manner. The dru'mfi is now started by depressing the left-hand side-footrest of the treadle 14, and the wire is slung in about 20 to 30 turns around the drum. Then the drum 6 as well as the drum 5 are stopped by the treadle 15. The operator detaehesthe wire fromthe point of the drum 5 and pulls the end across the rollerl90 to the next die 2.

This die is slipped over the wire, placed into its holder and the end f the wire attached to the second drum 6. By means of the treadle 15, the drum 6 as well as the drum 5' is now simultaneously started, and while the drum 6 pulls its wire from the drum 5, the drum 5 takes up its wire by pulling it through the die 1. lrVhen the second drum 6 has taken up sufficient wire, both drums are arrested by means of the treadle 15. If the treadle 15 would act on the drum 6 only,.the drum 5 would continue to revolve and twist the wire off at the point of the drum. All three drums 7, 6 and 5 might, of'course, be stopped sim'ul taneously, in order to tie the Wire directly to the drum 7 after passing it through the sec- 0nd die 3, whereupon all three drums 7, 6 and- 5 are then rendered operative by means of the P treadle 16. When the finished wire is finally" tied to the drum 8, the entire "machine is started by depressing the treadle 17 and the wire is drawn through the machine. When the drum 5-is "again becoming empty, the operator stops this drum by means of the treadle 14: and threads the end of a fresh coil of wire through thefirst die and on to the first drum without interfering with the run .of the remaining drums. When the second drum has become empty, the justdescribed proc-v ess is repeated. It will be understood that it is thus unnecessary to stop the entire machine whenever a fresh wire is to be drawn in and that the next coil of wire may be drawn into A the machine as soon as a coil of wire has left the first drum, while the remaining drums continue to revolve.

drums on the left of it are simultaneously connected or disconnected to throw out of gear or into gear the electric or mechanical clutches of the respective drums. It will be readily understood that push buttons or other suitable n'ieansmay be employed instead of the treadles for controlling the solenoids or other suitable electrical devices.

This electromagnetic clutch engaging and disengaging gear is particularly suitable in casesin which the attendant is not able to operate-the clutches by hand, for instance when stout wire is 'drawn and the clutches become very heavy. In such a case, the armangement may also be such that a purely mechanical arrangement is provided, which the attendant operates by the aid of an appropriate auxiliary clutch of any known or suitable construction which he can throw into or out of gear easily by means of a treadle or handle and which in its turn is driven by the machine or by any other force. This auxiliary clutch in its turn then throws the main clutches of the drums into or out of gear, sothat the workman himself has not to overcome the resistance of the main clutches atthevarious drums, but that this is effected by the easily ope-rated auxiliary clutch.

The auxiliary clutch is preferably so arranged, that the treadles 30 mentioned in conjunction with the following description of the design of the machine illustrated in Figs. 3 to 6 serve to throw the auxiliary clutch out and into engagement, while the hereafter mentioned treadles 14, 15, 16, 17 serve as control members, so to say, by means of which theclutch may be thrown into gear with the respective drums, so'that the engagement and disengagement of the drums belonging to the treadle as well as the preceding drums takes place in common.

In the Figs. 3 to 6, there is illustrated a Y relatively light machine in which the attendant effects the engagement and disengagement of the drums mechanically by his strength only without driven auxiliary clutch. The treadles 15, 16 and'l'l' are at their lefthand end provided with a suitable extension 29", 29, 29 which projects beyond the preceding treadle, so that by depressing a treadle all the treadles on the left of it are also depressed,while the treadles on the right are not affected. At the front of the machine above the treadles is turnably mounted in bearings of the end frames a rod 18. On this rod there are mounted levers 19 19", 19 19 hanging downwards. On these levers are pivoted the pawls 20, 20", 20, 20 in such a manner that when depressing one of the treadles 11 15 and so on, the respective pawl provided at the inner end with a counterweight is moved by the respective treadle out of the way and drops to the front again and arrests the depressed treadle in its lowest position, as will be clearly seen in Fig. 5. By depressing the treadles 14 or 15* and so on against the resistance of the springs 91, the drums 5, 6, 7 and so on are lifted by a pushrod '21 provided under each drum spindle 22 and thereby their lower clutch discs 23 are detached from the cooperating clutch discs 24 which are continu ously rotated from the driving shaft 25 by means of the pairs of bevel wheels 26, 27. On a separate rotatably mounted shaft 28,

there are mounted further auxiliary treadles" 30*,30", 30, 30 On said shaft 28, there is further mounted a lever 31, which acts on a lever 34 by means of a pushrod 32 and spring. 33, said lever being fixed on the shaft 18. The mode of operation of this embodiment ofv my improved drawing machine is as follows:

Assuming that the last end of a coil of wire has left the drum 5, so that this drum is empty, all the drums revolving and the treadles 1 4, 15, 16 17 being in their raised position. By depressing the treadle 14 at the point marked with E in Fig. 6, the drum 5 is un coupled and stops. The treadle 14 merely forces the movable pawl 20 downwards without moving the lever 19 When the treadle has reached-its lowest position according to Fig. 5, the pawl 20 drops to the front again and preventsthe treadle 14 from ascending, so that the drum 5 is held in the inoperative state, as already described above, the first die intowhich the beginning of the new wire coil has already been threaded before is then placed into the die holder of the drum 5, and the end of the wire fixed to the drum: To start the drum 5 again, the operator steps with his foot on the spot of the treadle 14 designated with F in Fig. 6. He 'thus depresses firstly the treadle 30 and puts the spring 33 under tension by means of the lever 31 and the rod 32 and thereby also sets under spring tension the levers 19,19", 19, 19 on the shaft 18 by means of the lever 34 and the said shaft. The levers are, however, not able to follow this tension, because they are for the time being held in their position due to the frictional resistance fllzietween the pawl 20 and the .treadle 14*. During the depression of the treadle 30 the tension of the spring 33 increases until the treadle 30 has been lowered to the level of the treadle 14 in Fig.5. If, then, the treadle 3O" be further depressed, the operatorfs footencounters the treadle 14 and depresses the same. As a result, the frictional resistance between the pawl 20 and treadle 14 is eliminated and'levers l 19 and so on are now able to follow the pull of the spring 33,'move inwards and give the way free-for the ascent of the treadle 14, so that the drum 5 is started again and commences to drawwire. Meanwhile thewire has also left the drilm 6. By depressing the treadle 15 the treadle 14 simultaneously descends, both pawls 20 and .20 'being when the treadle sweeps past and then keep 65,

deflected inwards the treadles in the depressed position by tumbling towards the front again. The operator now detaches the end of the wire from the drum 5 in the manner described before and fixes the end of the wire drawn through the and, the pawls 20 and 20 have become free,

the levers 19 and 19 are able to follow the pull of the spring 33 and to deviate inwards, so that 'the treadles 14 and 15 are able to. ascend and to render the drums 5 and 6 operative.

The process with regard to the third drum 7 and any other following drums is similar to the above described.

From the above it' will be obvious that by throwing into or out of gear one of the drawing drums not onlycall the preceding drawing drums are likewise thrown out and in, but that one drawing drum and thus all the preceding drawing drums can only be thrown into gear, if the following drums are running viz, are thrown into gear. This advantage is of great importance, because otherwise it might happen that when one drum runs, while the following stops, the wire passed over the point of the rotating drum on to the stationary drum would be twisted and break; On the other hand, it would of course be possible to stop the drums on the left, whilethosev on the right continue to revolve, and this fact is of great importance,because when in the case of big wire coils one or the other drum would become filled upexcessively, it is possible to arrest this drum temporarily and thus to reduce the store of wire on this Y drum..

In the Figures 7 to 12 is illustrated one of the abovementioned heavy duty machines for which the bodily strength of the attendant would not suffice for the mechanical disengagement of the individual clutches. Instead of employing for this purpose the above menalso the engagement or disengagement of the clutches may be efi'ectedby raising or lowe-r; ing the drum spindles 22. Below the mains;

shaft 25 is, mounted in the machine framing j a second shaft 36 and upon this latter shaft are guided displaceable sliding members, for instance bushes 37, 37 .37, 37f, as well as intermediate members such as bushes 38, fixed'an arm 44, as shown in Fig. 12,which 38, 38. The sliding bushes carry upon their upper side cams or tappets 39", 39*, 39, 39 upon which rest push rods 21, 21, 21, 21 by means of antifriction rolls 40, 40", 40, 40.

. By reciprocating the said slide bushes, the

clutches of the drums 5, 6, 7 and 8 may thus be disengaged or engaged. The intermediate bushes 38, 38", 38 serve to maintain accurate spacing between the main bushes, so that by displacing for instance the first slide bush 37 towards the right, all the drums are started, while by moving the slide bush 37 towards the left all drums are simultaneously lifted and thus thrown out of gear. If on the other hand the central slide bushes are moved towards the right or the left, only the drums located at the right or left therefrom are affected thereby.

Behind the stationary shaft 36, there is journaled a slideable shaft 40, which has a continuous reciprocating motion imparted to p it either from the main shaft by a transmission gear of known or suitable design or by some other machine power, for instance by a crank mechanism, which is diagrammatically indicated at 50, 51. -Upon said shaft 40 are mounted rotatably, but secured against lateral motion by collars, fork-shaped rotary members 41, 41, 41, 41, 41. The members 41 to 41' are adapted to be turned by depressing the treadles 14", 15 16 17 in such a manner that, for example by means of inner limbs 52 52, 52 and 52, they come into engagcment with lateral extensions 60", 60 and 60 of the slide bushes and thus move them them towards one side by the aid of the displacement of the rod 40 effected by the above mentioned crank gearing. The design is such that the slide bushes are movable by the rotary parts 41, 41, 41 and 41 to the left only. For this purpose, the extensions 60, 60 and so on of the slide bushes are so long i that the limb or nose 52 etc. of the rotary part 41 etc. with depressed treadle only engages the rear ofthis extension when the shaft 40 is in its extreme right-hand position, and

during the next displacement of the-shaft 40 said engaging part will then move the co ordinated slide member towards the left as well as by means of the bushes 38 etc. all the slide bushes at the left and thus will throw out of gear the drum belonging to it as well as all the drums on the left of it, while the drums on the right remain unaffected, The treadle 14, 15, 16 or 17 b appertaining to each drum is individually rotatably mounted on a likewise rotatably journaled shaft 43. Upon this shaft 43, there are, moreover, fixed treadles 14, 15, 16, 17 belonging to each engages the rotary part 41 of theshaft 40 and by depressing one of the treadles 14, 15, 16 01'' 17 said armmoves said part 41 into engagement with the left end of the extension 60* of the slide bush 37,in such a manner that during the next displacement of the shaft The above desdribed designs or embodiments of my invention are to be understood as examples only and should of course not be considered as limitations. It is obviously immaterial whether the drums are located at an angle to the horizontal, as shown in Fig. 2, or whether they stand at right angles to it, as illustrated in the other figures of the drawings. This will mainly depend upon the demands which the wire to be drawn makes on the drawing machine or bench. Various modifications and changes may be made without departing from the spirit and the scope of the invention, and I desire, therefore, that only such limitations shall .be

art.

I claim asmy invention 1. In a multiple wire drawing machine with a plurality, of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums, means for coupling and uncoupling each drum individually with said driving mechanism, and means for each drum for throwing 1 said coupling means into or out of gear and adapted to throw the preceding drums simultaneously into or out of car, while leaving the following drums una ected.

2. In a multiple wire drawing machine with a plurality of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums,

means for coupling and uncoupling each drum individually with said driving mecha nism, and means for each drum for throwing said coupling means into or out ofgear, sa d .means standlng in such relation to one another that by the operation of the throwing out means of one drum the like means of the preceding drums are operated in the same way, while-the like means of the following drums remain unaffected.

3. In a multiple wire drawing machinewith a plurality of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums, means for coupling and uncoupling each drum individually with said driving mechanism, mechanically operated means for each drum to throw said coupling means into and out of gear, and means for each drum for control-' ling said mechanically operated means, said throwing out means standing in such a relation to one another that by the operation of the throwing out means of one of said drums the like means of the preceding drums are operated in like manner, while the like means of the following drums remain unaffected.

4. Ina multiple wire drawing machine with a plurality of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums, each of said drums being adapted to be raised and lowered, a coupling member on each drum adapted to be thrown out of and into engagement with a corresponding coupling member driven by said driving mechanism by raising and lowering said drum, means for raising and lowering each drum, and means at each drum to throw said raising and lowering means into and out of gear, saidmeans standing in such relation to one an-' other that by the operation of said means of one drum the like means of the preceding drums are operated in like manner, while the like means of the following drums remain unaffected. I

5. In a multiple drawing machine with a plurality of consecutive drawing drums each provided with means permitting the w re to uncoil as well as unwind, 1n combinat10n,mechan1sm for driving said drums, each of said drums being vertically slidably I the operation of the means of one drum the like means of the preceeding drums are operated in like manner, while the like means of the following drums remain unaffected.

6. In a multiple wire drawing machine with a plurality of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums,

means for coupling and uncoupling each drum individually with said drivlng mechanism, and means for each drum forthrowing said coupling means into or out of'gear, said means consisting of a number corresponding with the" umber of drums of slideable main members ind also slidable auxiliary mem- -bers,.said auxiliary members being arranged intermediately said slideable main members in such relation that when one of said main sliding members is displaced in the direction of disengagement, by means of said intermediate members the slideable members of the preceding drums are displaced in the same direction, while the slideable. members of the following drums remain unaffected 7 In a multiple drawing machine with t plurality of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums, each of said drums being adapted to be raised and lowered, a coupling member on each drum adapted to be thrown out of and into engagement with a corresponding coupling member driven by said driving mechanism by raising and lowering said drums, means for raising and lowering each drum, said means comprising a number corresponding with the number of drums of sliding bushes with lifting cams longitudinally slideable upon a rod, said cams being adapted to lift the respective drums when displacing said sliding bushes in one direction and permit the lowering of the drums when displacing said bushes in the opposite direction, and also intermediate bushes longitudinally displaceable on said rod, which are located between the said first sliding bushes in such a manner that when a sliding member is displaced in the direction of disengagement, by means of the said intermediate members the sliding members of the preceding drums are displaced in the same direction, while the sliding members 4 of the following drums are not displaced.

8. In a'multiple wire drawing machine with a plurality of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums, means for coupling and uncoupling each drum with said driving mechanism, and means for each drum for throwing said coupling means into or out of gear, said means comprising a number corresponding with the number of drums of displaceable sliding members and of likewise displaceable intermediate members located between the said slideable members in such a relation that on displacement of one of the sliding members in the direction of disengagement,'b'y means of the said intermediate members the slideable members of. the preceding drums are displaced in the same direction, while the slideable members of the following drums are not displaced, means for displacing the slideable members in the direction ofdisengagement consisting-of a corresponding numberbf entraining members, means for mechanically reciprocating said latter means continuously, and means for throwing any desired entraining number selectively into or out of operative engagement with the respective sliding member by means slideable members in such a relation that on displacement of one of the sliding members in the direction of disengagement of one of the sliding members by means of the said in termediate members the slideable members of the preceding drums are displaced in the sameb direction, while the slideable members of the following drums are not displaced, means for displacing the slideable members in the direction of disengagement consisting of a corresponding number of sleeves mounted upon a mechanically and continuously reciprocated rod 50 as to be rotatable, but not slideable thereon, andadapted to be turned into operative engagement with a stop of the respective slideable member by means of the respective disengagement members of, the

drums and independent of one another.

10. In a multiple wire drawing machine with. a plurality of consecutive drawing drums each provided with means permitting the wire to uncoil as well as unwind, in combination, mechanism for driving said drums,

means for coupling anduncoupling' each drum with said driving I, mechanism, and means for each drum for throwing said coupling means intoand out of gear, said means consisting of-a number corresponding'with -the number of drums of slideable members slideable members, into the inoperative posiand also slideable intermediate members arranged between said slideable main mpmbers in such relation that when one of said sliding 7 members is displaced in the direction of disengagement, by means of saidintermediate vmembers the slideable members of the preceding drums are displaced in the same direction, while the slideable members of the,

following drums remain unaffected, mechanically reciprocated entraining members adaptthe wire to uncoil as well as unwind, in.

combination, a mechanism for driving said drums, means for couplmgand uncouplmg' each drum with .said driiiing mechanism,

means 'for each drum for throwing said coupllng means into and out of engagement, said means consisting'of a number corresponding with the number of drums of slideableme-mbersand of likewise movable intermediate members located between said slideable members in such a relation that when one of said slideable members is moved in the direction of disengagement, by means of said intermediate members the slideable members of the preceding drums are displaced in-the same direction while the slideable members of the 'following drums are not displaced, means for displacing the slideable members into their operative position consisting of sleeves mounted rotatably but not slideably upon a rod mechanically continuously reciprocated and adapted to be turned into operative engagement with the corresponding slideable member by means of the respective disen gagement members of the drums independent of one another, means for the return of the slide- .able members in their inoperative position consisting of a common entraining member mounted on said mechanically reciprocated rod rotatably but not slideably, and means forthrowing said entraining member into and outof operative engagement with the first slideable member by each of the engagement members provided for said drums.

. In testimony whereof "I have aifixed my signature.

- NACKEN.

ed to be brought, selectively in engagement withthecoordinated slideable members and to move the said slideable membersinto the operative position, means for returning said tionconsisting of an entrainingmember com- F mon to all of said slideable members, means 

